Can anyone tell me how to adjust the throttle screw. Ive looked everywhere and can not find the information.

The throttle screw controls how far the throttle plate is open. You really cant set the TPS until this is adjusted.

 

I can think of no reason to adjust the throttle screw, unless you have incorrectly adjusted it in the past. It won't (shouldn't) go out of adjustment on its own.

 

Got the truck used and unsure if any of the adjustments are correct. I rebuilt the motor and want to go re-adjust everything while I have it out and accessable